If you're a fan of sports, DIY or The Walking Dead, Sling TV has a deal for you that includes free set-top boxes and HDMI sticks. Sling TV has apps for both the Roku and Amazon Fire TV platforms — as well as PCs, Macs, and iOS and Android mobiles. It's teamed up with Roku and Amazon to offer the $50 Roku Stick or the $39 Fire TV stick for free. If you want more-powerful gear, you can opt to get half off the $100 Roku 3 or $99 Fire TV boxes.

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